2. Summary of Significant Accounting Policies (Details) - shares	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Total shares that would have been anti-dilutive	35,439,898	27,153,599
Options [Member]
Total shares that would have been anti-dilutive	23,184,256	21,761,512
Warrants [Member]
Total shares that would have been anti-dilutive	8,885,242	5,392,087
Convertible Notes [Member]
Total shares that would have been anti-dilutive	3,370,400	0